Rolling-mill.



J. EL FAWELL.

ROLLING'MILL.

' APPLIoATloN FILED 00T. s1, 1914. 1,131604hv Patented Mar. 9, 1915.

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INVENTUM La. E. FAWELL.

ROLLING MILL.

APPLIOATION FILED 00T. 31, 1914.

Patented M3129, 1915.

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INVENTOH VJITNESSES J. E. FAWELL.

ROLLING MILL.

APPLICATION FILED 0GT.31,1914.

3l 9 jl, 3 l QQWM Patented Mar. 9, 19M.

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INVENTOF' J. E. FAWBLL.

ROLLING MILL.

Y APPLIGATION FILED 0GT.31, 1914. 1,1 ik L04. Patented. Mar. 9, 1915.

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UNITED srAfrEs PATENT oEEroE.

JOSEPH EDWARD FAWELL, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO MACKIN- TOSI-I, HEMPHILL & CO., 0F PITTSBURGH, PENNSYLVANIA, .A CORPORATION OF PENNSYLVANIA.

nomine-MILL.

Specification of Letters Patent.

Patented Mar. 9, 1915..

' Application led october 31, 1914. Serial No. 869,692.

T0 all whom it may concern:

Be it known that I, JOSEPH E. FAWELL, residing at Pittsburgh, in the county Aof v Allegheny and State of Pennsylvania, a citizen of the United States, have invented or.

discovered certain new and useful Improvements in Rolling-Mills, of which improvements the following is a specification.

The 'invention described herein relates to certain improvements in' rolling mills.

. Except in the ,tandem or continuous type of mills, reduction is effected of a plurality of back and forth passes through the mill. These back and forth passes are eected in mills having a pair of rolls, by rotating the latter first in one direction and then in the opposite direction. This mode of operation .involves the employment-of reversible moa piece is being reduced by one pair the rolls of the other pair are separated so as to allow the piece to pass between them. This form of mill is objectionable on account of the necessary shifting of one or both pairs intermediate of each reduction and for other reasons.

A fourth type of mill has been devised in which a pair of rolls driven constantly in the same direction are so mounted that they can be turned through an arc of one hundred and eighty degrees intermediate of each reduction.` While this mill has many advantages, the necessary large range of movement intermediate of each reduction, and the diiiculty encountered in adjusting the rolls toward and from each other, are objectionable.

The invention described herein has for its object, a construction of mill having two pairs of rolls oppositely driven and so mounted that one pair of rolls can be moved `out of the line of movement of an article while being reduced by the other pair.

The invention is hereinafter more yllly described and claimed.

In the accompanying drawings forming a part of this specification, Figure l is a sectional elevation of a mill embodying my improvement, the plane of section being at right angles to the axes of the rolls; Fig. 2 is a top plan View of the same; Fig. 3 is a sectional elevation on a plane indicated by the line III-III Fig. 1; Fig. 4 is an end elevation of the pinion housings and pinion; Fig. 5 shows in plan and end elevation a modification of the arrangement of the pinions; Fig. 6 is a sectional elevation illustrating a modification in the manner of mounting the rolls; the plane of section being at right angles to the axes of the rolls; Fig. 7 is a sectional elevation on a plane indicated by irregular line VII-VII Fig. 6; Fig. 8 is an end, and Fig. 9 a side elevation of a form of pinion housing and pinion which may be employed with the forms of mill shown herein; Fig. 10 is a sectional elevation illustrating another form for supporting the pairs of'rolls; Fig. 11 is a side elevation of the construction shown in Fig. 10; Fig. 12 is a sectional view illustrating another embodiment of my improvement,

and Fig. 13 is a diagrammatic view illustrating the preferred arrangement of theV ranged at an angle to the housings 4 4. As

regards the arrangement of the rolls in the housings and the manner of supporting them therein, any suitable construction may be employed, and while hand operated screws 5 are shown for adjusting the rolls any other known or suitable means may be employed for that purpose. These housings are secured on a shaft 6, which is mounted in pillow blocks 7 as shown in Figs. 2 and 3, and on this shaft is secured an arm 8 connected by a rod 9 to a Suitable motor, as the tluidpressure cylinder 10, whereby the housings may be shifted so as to move one pair of rolls to operative position and the other pair o f rolls out of the line of move ioo ment of the article being reduced by the first pair.

As shown in Figs. 1 and 2 stationary tables having feed rollers 11 are arranged on opposite sides of .the mill. As the movement of the housings prevents the tables being arranged With their inner ends sufliciently near the rolls to prevent the emerging end of the article from dropping down, intermediate supports are provided by arranging rollers 12 on brackets 13 so secured to the housings that when one pair of rolls is moved to operative position, the rollers .,12 will be horizontally in line With the rollers 11. The movements of the housings from one position to the other are preferably arrested by stops 14, against which the housings can be firmly held by the motor. It is preferred that the angle between the housings 3 and 4, which will be dependent to some degree upon the diameters of the rolls, should be such that When one pair of rolls as 2, is in operative position, the upper roll 'of the other pair will be in a position to serve as a feed roller for the piece being reduced by the first pair. In order to support the end of the piece While passing from the operating rollers to the roll serving as a feed roller, an idler roller 15 may be arranged on the housings as shown in Fig. 1.

In order to reduce as far as possible the distances between inner ends of the feed tables and the rolls when in operative position, the feed tables or at least the inner ends thereof are made of a Width less than the distance between the housings, so that the upper ends of the latter Will move'l alongside of the inner ends of the tables, as shown in Fig. 2.

As it is preferred that each of the rolls should be driven directly from a pinion, the

necks at one end are connected by sleeves 16 to one end of the coupling shafts 17, and the opposite ends of the latter are similarly connected to the necks of the respective pinions. As shown in Figs. 2 and 13, the pairs of pinions 18 and 19 are arranged on opposite sides of a vertical plane a coinciding with the axes of a' pair of rolls when in operative position, and in order that the angles ofthe coupling shafts 17 with the axes of the rolls pairs of pinions,

will be equal when the latter are in operative and inoperative positions, the pinions are so arranged in their housings, that planes b c coincident with the axes of the respective will form angles with the vertical plane @approximately one-half of the angle formed by the planescoincident With the axes of the pairs of rolls as Will be clearly seen by reference to Fig. 13.`

As shown in Figs. 2 and 4, uniformity of rotation of the pairs of rolls may be attained by arranging-intermeshing pinions 20 on extensions of the shafts of the lower pinions pinions of each pair will intermesh as shown s in Fig. 5.

In the construction shown in Figs. 6 to 8 inclusive the pairs of rolls 1 and 2 are shown as having their journals 21 mounted in suitable bearings in circular housings or disks 22, which in turn are mounted in annular bearings 23. As shown in Fig. 6, the pairs fof'rolls are so arranged relative one to the other that planes coincident With the axes of the rolls of each pair vvill be at an angle to each other dependent upon the diameters of the rolls. The circular housings may be shifted by any suitable means, as for example by pinions 24 intermeshing with teeth on the peripheries of the housings and also with the toothed bars 25, Which can be shifted by any suitable motor as the fluid pressure cylinders 26. The pairs of rolls are connected to pairs of pinions 27 and 28 as by coupling shafts 29. As described in connection With the construction shown in Figs. 1 to 5,.the pairs of pinions are arranged relative to the rolls and to each other, so that the angles of the coupling shafts With the rolls Will be the same or approximately so, when the rolls are in either position.

.In the construction shown in Figs. 10 and 11 the housings 30 carrying the pairs of rolls 1 and 2 may be suspended from a shaft 31, supported on pillars 32 and 38, one of Which may be an extension of one side of the pinion housing 34: as shown in Fig. 11. A pendulum-like movement is imparted to the housings to bring the respective pairs of rolls to operative positions by a motor 35 connected to extensions of the housings.

In lieu of moving the pairs of rolls in arcs of circles a rectilinearhmovement may be given to the housing. carrying the'pairs of rolls as shown in Fig. 12. The housings 36 and 37 are movably mounted in a frame 38,

so as to be moved vertically to and from operative position. In the construction shown, the housings rest upon rods 39 connected to opposite ends of a lever ll0, which is provided an arm 41 connected to the motor 42.

It is characteristic of the improvement described herein that as one pair of rolls is shifted to operativ-'position relative to the line of feed ofthe metal, the other pair of rolls is moved to a position Where it Will not interfere With the movement of the metal from the other pair. Asthe pairs of rolls are rotated-,to effect respectively opposite movement-sof the metal being reduced, the top roll ofpone pair will rotate in the same direction as the bottom roll of the other pair, and hence if in moving a pair to inoperative position, such movement be checked when the upper roll of the pair has 1,131,604 tra reached a position, where its upper surface will be in the plane of the upper surfaces of the feed rollers, such roll will operate to feed the metal along. I claim herein as my invention:

1. In a rolling mill, the combination of two set's of rolls adapted to be shifted relative to a horizontal plane, and means for shifting said respective sets of rolls in sequence to and from reducing position.

2. In a rolling mill, the combination of two sets of rolls adapted to be shifted relative to a horizontal plane, and means for moving one set into and the other set out of operative relation to a common line of feed.

- 3. In a rolling mill, the combination of two sets of rolls, meansfor rotating said sets of rolls in opposite directions respectively, and means for shifting said sets of rolls into and out of operative relation to a common line of feed.

4. In a rolling mill, the combination of two sets of rolls, means for rotating said sets of rolls in opposite directions, respectively, and means for simultaneously shifting said sets of rolls` one into, and the other out of operative relation to a common line of feed.

5. In a rolling mill the combination of a stationary feed table, two sets of rolls adapted to be shifted relative to a horizontal plane and means for shifting said sets of rolls relatively to the feed table.

6. In a rolling mill, the combination of two sets of rolls, means for rotating said sets of rolls in opposite directions, respectively, stationary feed tables, and means for and out of line with said tables.

7. In a rolling mill,A the combination `of two sets of rolls, the axes of the rolls of one set being in a plane at an angle to a plane coincident with the axles of the rolls of the other set, and means for shifting said sets of rolls to a common operative position.

8. In a rolling mill, the combination ofv two sets ofrolls, the axes of the rolls of one set being in a plane at an angle to a plane coincident with the axes of the rolls of the other set, a stationary table, and means for shifting said sets of rolls to operative position relative to said feed table. 9. In a rolling mill, the combination of a feed table, two sets of rolls, the aXes of the rolls of one set being in a plane at an angle to a plane coincident with the axes of the rolls of the other set, the angular relation 60 of said sets of rolls being such that when one set of rolls is in operative relation to the feed table, the upper roll of the other set will be in alinement with the feed table, means for rotating said sets of rolls in opposite directions, respectively, and means shifting said sets of rolls alternately into for shifting said sets of rolls to and from operative relation to the feed table.

10. In a rolling mill, the combination of rotatably mounted housings, two sets of rolls carried by said housings means for rotating said sets of rolls in opposite directions respectively, and means for rotating said housings.

11. In a rolling mill, the combination of housings provided with windows arranged at an angle one to the other, rolls having their journals supported in said windows, a pivotal support for said housings, and means for moving the housings around said support.

12. In a rolling mill, the combination of rotatably supported housings provided with windows arranged at an angle to each other, rolls having their journals supported in said Windows, a feed table, movable means for supporting the metal intermediate the rolls and the feed table, and means for rotating the housings.

13. In a rolling mill, the combination ofcircular housings provided with windows arranged at an angle one to the other, annular bearings for the housings, sets of rolls having their journals supported in said windows, means for rotating said sets of rolls in opposite directions respectively, and means for turning the housings.

14. In a rolling mill, the combination of two sets of rolls, the axes of one set being in a plane at an angle to a plane coincident with the aXes of the other set, two sets of pinions, the axes of one set being in a plane at an angle to a plane coincident with the axes of the other set, the angle formed by the planes coincident with axes of the pinions being less than the angle formed by the planes coincident with the aXes of the rolls, and means for shifting the sets of rolls to and from vertical position.

15. In a rolling mill, the combination of a vhorizontally arranged feed table, housings adapted to move in the arc of a circle, two sets of rolls supported by said housings, the axes of one set of rolls arranged in a plane at an angle to a plane coincident with.

the axes of the other set of rolls, two sets of driving pinions arranged on opposite sides of a vertical plane coincident with the center of movement of the housings, the

axes of one set of pinions beingin a plane at an angle to a plane coincident with the axes of the other set of pinions, the angle between the planes of the aXes of the pinions being less than the angle between the planes of the roll axes and flexible driving connections from the pinions to the rolls.

16. In a rolling mill, the combination of a pair of rolls, a feed table, means for shifting said pair of rolls simultaneously and in the same direction relative to a horizon'- tal plane to and from operative relation to windowsarranged at an angle to each other, rolls having their Journals supported in said windows, a feed table, means for supporting l5 the metal intermediate the rolls and the feed table, and means for shifting said housings relative to a horizontal plane.

In testimony whereof, I have hereunto set my hand.

JOSEPH EDWARD FAWELL. Witnesses:

G. G. TRILL, THos. B. JOYCE. 

